Menene tsarin dumama ruwan zafin rana?

Yaya tsarin dumama ruwan zafi mai zafin rana yake?Menene kayan na'urorin haɗi don tsarin dumama ruwan zafin rana?Mun dauki lita 1000 da tsarin lita 1500 misali.Zazzage fayil ɗin PDF don Allah.